Molding means



June 3. w. DE LANEY 2,323,014

v MOLDING MEANS Filed Sept. 50, 1941 'Zj' y P 35 WHLL 0c; 05/. H/VEYINVENTOR ATTORNEYS Patented June 29, 1943 MOLDING MEANS Wallace DeLaney, Ashland, Ohio, assignor to The Faultless Rubber Company, Ashland,Ohio, a

corporation of Ohio Application September 30, 1941, Serial No. 412,984

10 Claims. (CI. 18-35) This invention relates to molding means, moreparticularly to means for molding a container such as a fountainsyringe, water bottle, ice cap, or the like, and the principal object ofthis invention is to provide new and improved molding means ofthe'character described.

Referring to the drawing accompanying this specification and forming apart of this application, there is shown, for purposes or illustration,one form which the invention may assume, and in this drawing:

Figure 1 is a perspective view oi a syringe bag iormedas a result oimolding in the improved molding apparatus, a portion of the bag beingbroken away to more clearly illustrate its construction, I j

Figure '2 is a transverse sectional view taken through a moldillustrating an embodiment of the invention, the view correspondinggenerally to the line 2-'-2 of Figure 3,

Figure 3 is a central longitudinal sectional view correspondinggenerallyto the line 8-4 of Figure 2, Y I

Figure 4 is a fragmentary transverse sectional view correspondinggenerally to the line H of Figure 3, and

Figure 5 is a fragmentary sectional view of a detail, correspondinggenerally to the line H of Figure 3.,

Referring particularly to Figure 1, the syringe bag, indicated generallyby the numeral i8, is formed of rubber or the like, and comprisessubstantially flat front and back walls ii and I2,

The embodiment illustrating the apparatus for molding the syringe bag itcomprises a twopart mold and a core, the parts of the mold beingindicated generally by numerals l8 and 28 respectively, and the corebeing indicated generally by the numeral 2i. The mold parts i9, 28 arerespectively supported in mold sections 22, 28. As here shown, each moldsection 22, 28, is formed with a longitudinal recess 24, and therespective mold part is held in position in its recess in any suitablemanner. As best seen in Figure 3, each mold part it, 28 is meterably ora length substantially equal to the length of the mold sections 22, 23.

The mold sections 22, 28, may be held in proper alignment with respectto each other by means of pins 28, here shown as passing throughapertures located at the corners of the mold sections. Cooperating pairsof lugs 28 may be having foldable side sections l8 formed by an I ii,i2, and the foldable side sections l8 merge with a tubular throatportion l5, and at the lower portions merge with a tubular outlet spouti8 adapted to be connected to a syringe tube (not shown) forming part ora complete syringe combination. The inner defining margin of eachioldable side section I8 is substantially in alignment with the exteriorsurface of the outlet spout II, and extends upwardly substantially inrectilinear manner, the upper part curving to the throat portion asindicated at ll. As seenin Figure l, the lower sides of the walls ll, I2curve to the outlet spout ii. A handle i8 extends upwardly from the rearwall l2 and the adjacent side parts of the throat portion l5, and isadapted for the purpose of transporting or supporting the syringe bagIll.

The syringe bag it, it will be appreciated, forms a compact, easilytransportable article. When fluid is introduced into the bag through-the opening provided by the throat portion i5, the folds I! will extendoutwardly to provide a receptacle or sumcient volume.

provided, one on each mold section, for the purpose of breaking" openthe mold after the molding and vulcanizing operation has. beencompleted. 1

The mold parts have meeting faces 21, and extending inwardly, of theseraces, each mold part is formed with recess means 28 adapted to providefor a longitudinally complete portion of the syringe bag. Accordingly,that portion of each of the recess means forming the body portion of thesyringe bag is substantially or W-shape (see Figure 2), and comprises apair 0! recesses 29, each substantially of v-shape, the recessescommunicating with each other as shown at 28, so that the crest 8iseparating the recesses 29 terminates short of the respective meetingface 21. The recesses 28 are preferably of such inward extent that theyform one-halt of the transverse extent of each of the ,front and backwalls, together with the included Ioldable side section i3.

Each recess means 28 also is configured to correspond to the exteriorshape of substantially one-half of the transverse extent of the throatportion i5, as best seen in Figure 4, and substantially one-half of thetransverse extent of the 7 outlet spout ii. The crest SI of each moldpart i8, 28, has its terminating margin contoured to form the curvedportion ll of the side sections i2, and the mold recess means 28 arefurther contoured to provide the curved lower portion of the syringebag. Thus, it will be seen that the cess 29 of the recess means 28. Thecore is also provided with a throat forming portion 3% and with curvedwalls St for forming the curved portion it of the foldable side sectionsi3. As seen in Figure 3, the throat forming portion 38 extendssubstantially to the corresponding extremity of the mold parts it, it,and at this point is provided with a handling rod 35. The otherextremity of the core 2i terminates in a small diameter extension 36,adapted to closely fit, for positioning purposes, a correspondingcircular recess 3'! formed as part of the recess means 28 in the moldparts 59, 2d. The circular recess 37 has an enlargement 88 cooperatingwith the core extension to provide a cavity for forming the outlet spoutit.

As shown in the embodiment illustrated, it has been found preferable toform the handle by so configuring the recess means 28 of the mold partsit, 20 and the core 2i, that a recess 3% is formed,

'ofiset with respect to the longitudinal center line of the mold parts,as seen in Figure 4, so that the handle it is formed substantially as acontinuation of the back wall E2 of the syringe bag it.

The handle recess 39 is formed by properly grooving the mold parts is,20, and the core 2i. In this embodiment, each part i9, 28 is grooved toprovide for substantially one-half of the iongitudinal extent of thehandle it, and also substantially one-half of the thickness of thehandle. The grooves in the parts i9, 20 form a complete groove (seeFigures 3 and 5) providing for the complete longitudinal extent of thehandle l8, and providing for substantially one-half its thickness. Thecore 2i is formed with a groove 4i, complementary to the complete groove50, and providing for a complete longitudinal extent of the handle l8,and for substantially the other half of its thickness.

In molding the syringe bag W, the mold sections 22, 23 are separated,the core 2i is removed, and rubber stock is positioned to overlie thesurfaces of the lower recess means 28 of the mold part 20, referencebeing to the positions of parts as shown in the drawing. The core 2i isthen positioned so that its lowermost projections 32 press the stockinto the lowermost recesses 29, and another piece of rubber stock ispositioned to overlie the upwardly'extending projections 32 of the core2 I. The upper mold section 22 is then fitted over the positioning pins25, and the mold is closed. The mold may then be positioned in asuitable vulcanizing press, and pressure and steam applied in the usualmanner. Each of the meeting faces 21 of the mold. parts i9, 20, isprovided with a relief recess 42, into which excess stock may flow.After vulcanization, the mold may be broken open, as by applying asuitable tool between cooperating lugs 26. The core 2i with the syringebag formed about it, may then be removed from the mold, and the bag maybe stripped from the core, the operation being facilitated by extendingoutwardly the foldable side sections I3, stretching the throat portionsi5, and removing the core 25.

It will be apparent that the mold means herein disclosed provides foredge molding of the syringe bag, that is, the sections of stock arejoined at lines extending longitudinally along the relatively flat widefront and rear walls, as indicated at as in Figure 1. The inventionprovides comparatively inexpensive mold means for producing a syringebag having the desirable foldable side sections, and eliminates thenecessity of providing for movement of mold parts during the formationof the bag, thus eliminating costly maintenance and replacementexpenditures.

Although the specification and the drawing show the mold means asforming a syringe bag, it will be appreciated that this disclosurecomprises one embodiment of the invention, and that the invention isalso adapted for forming water bottles and the like. Also, although themold sections 22, 2-3 herein shown provide for only one set of moldparts it, it, and core 2i, these sections may be elongated transverselyso that sets of such parts may be disposed in spacedapart side-by-siderelation.

From the foregoing it will be apparent to those skilled in the art thatI have accomplished at least the'principal object of my invention, andit also will be apparent to those skilled in the art that theembodiments herein described may be variously changed and modified,without departing from the spirit of the invention, and that theinvention is capable of uses and has advantages not herein specificallydescribed; hence it will be appreciated that the herein disclosedembodiments are illustrative only, and that my invention is not limitedthereto.

I claim:

1. Apparatus for molding a container such as from its meeting face, saidrecess means being complementary to form a complete cavity configured tocorrespond to the complete exterior wall shape of the container, each ofsaid recess means being constructed and arranged to form a portion ofthe container which is longitudinally complete and transversely includesparts of each of the opposed walls and the included foldable sidesection.

2. Apparatus for molding a container such as a syringe bag, waterbottle, or the like, having relatively wide front and back walls joinedtogether by foldable side sections, comprising: a two-part mold and aunitary core; said parts of said mold having meeting faces, each parthaving recess means extending inwardly from its meeting face, at leastpart of said recess means being substantially W-shaped, providing forone of the foldable side sections and substantially one-half of eachfront and back wall, said recesses being complementary with respect toeach other to provide a complete cavity configured to correspond to thewall shape of the container; and said core being configured tocorrespond generally to the configuration of said complete cavity, andhaving oppositely extending pairs of substantially W-shaped projectionsfitting into respective recesses, the exterior surface of said corebeing spaced from the adjacent surface of said complete cavity toprovide for the wall thickness of the container.

3. Apparatus for molding a container such as a syringe bag, waterbottle, or the like, having opposed walls joined by foldable sidesections, a tubular throat portion, a handle, and a tubular outletspout, comprising: a two-part mold and a unitary core; said parts ofsaid mold having meeting faces, and each part having recess meansextending inwardly from its meeting face and configured to providefor'the exterior shape of substantially one-half of each of the opposedwalls and an included side section, one-half of the throat portion andthe tubular outlet spout,

and one-half of the longitudinal extent and onehalf of the thickness ofthe-handle, said recess means being complementary with respect to eachother to provide a complete cavity; and core means, disposed within saidcomplete cavity, configured and spaced to complement said completecavity and provide for thickness of the walls, side sections, throatportion and handle of the container.

4. Apparatus for molding a container, such as a syringe bag, waterbottle, or the like, having substantially opposed walls joined byfoldable side sections, comprising: a two-part mold, said parts havingmeeting faces, each part having recess means extending inwardly from itsmeeting face and so configured that it provides a contour surfacecorresponding to the exterior surface of one of the foldable sidesections and an'extending part of each of the opposed walls, said recessmeans being complementary with respect to each other to provide acomplete cavity configured to correspond to the complete exterior wallshape of the container; and core means, positioned within said completecavity, having projection means fitting into respective recess means butbeing spaced therefrom to provide for the wall thickness of thecontainer.

5. Apparatus for molding a container such as a syringe bag, waterbottle, or the like, having substantially opposed walls Joined byfoldable side sections, comprising: a two-part mold, said parts havingmeeting faces, and each of said parts having a recess extending inwardlyfrom its meeting face, said recesses being complementary to form acomplete cavity configured to correspond to the complete exterior wallshape of the container, and each recess providing the exterior contourfor a container portion which in transverse section includes a part ofeach of the opposed walls and the included foldable side section;unitary core means, positioned within said complete cavity, having anexterior surface configured to correspond generally to the shape of saidcomplete cavity but spaced from the surface of said complete cavity toprovide for wall thickness of the container; said mold and said corebeing relatively so constructed and arranged that stock interposedbetween the surface defining each of said recesses and a respective partof said core forms two container portions each in transverse sectionincluding one of said foldable side sections and the adjoining parts ofsaid opposed walls.

6. Apparatus for molding a container such as a syringe bag, waterbottle, or the like, having opposed walls Joined by foldable sidesections, comprising: mold means and core means, for Joining two piecesof stock to form the container, said mold means and said core meansbeing relatively so constructed and arranged that each piece of stock isshaped to form a portion of the container, each of said containerportions in transverse section including one of said foldable sidesections and the adjoining parts of said opposed walls.

7. Apparatus for molding a container such as a syringe bag, waterbottle, or the like, having opposed walls Joined by foldable sidsections, comprising: mold means and core means, for joining two piecesof stock to form the container, said mold means and said core meansbeing relatively so constructed and arranged that each piece of stock isshaped to form a portion of the container, each of said containerportion being longitudinally complete and forming approximatelytransverse halves of said container, and each of said container portionsin transverse section including one of said foldable side sections andthe adjoining parts of said opposed walls.

8. Apparatus for molding a container, such as a syringe bag,water-bottle, or the like, having substantially opposed walls joined byfoldable side sections, comprising: mold means and core means, forjoining two pieces of stock to form the container, said mold meanscomprising two mold parts having meeting faces, each part having recessmeans extending inwardly from its meeting face and so configured that itprovides a contour surface corresponding to the exterior surface of oneof the foldable side sections and an extending part of each of theopposed walls, said recess means being complementary with respect toeach other to provide a complete cavity configured to correspond to thecomplete exterior wall shape of the container; and core means beingpositioned within said complete cavity, and having projection meansfitting into respective recess means but being spaced therefrom toprovide for the wall thickness of the container.

9. Apparatus for making a bag having opposite re-entrant' wall portions,comprising: a unitary core means having a surface constructed andarranged to define the desired inside surface of the bag, said surfaceof said core means comprisin re-entrant surface portions on oppositesides of said core means; and two-part; mold means so constructed andarranged for cooperation with said core means that by causing said moldparts to approach each other around and in complementary relation tosaid core mean and around only two pieces of stock interposedrespectively between said mold parts and said core means, said twopieces of stock are formed into a bag having opposite re-entrant wallportions and i having only two longitudinal seams which are of the bag,said surface of said core means comprising re-entrant surface portionson opposite sides or said core means; and mold means having two partsonly, said parts having abuttable surfaces adapted to meet in a plane,said mold means being so constructed and arranged for cooperation withsaid core mean that when said abuttable surfaces are in abutment thecavitydefining surfaces of said mold parts define a composite surfacespaced from and complementary to said core means, said plane beingintermediate said opposite re-entrant surface portions.

WALLACE pr: LANEY.

